ram

I have written a python script that read the contents of two files, the first is a relatively small file (~30KB) and the second is a larger file ~270MB. The contents of both files are loaded into a dictionary data structure. When the second file is loaded I would have expected the amount of RAM required to be roughly equivalent to the size of the file on disk, perhaps with some overhead, but watching the RAM usage on my PC it seems to consistently take ~2GB (around 8 times the size of the file). The relevant source code is below (pauses inserted just so I can see the RAM usage at each stage).

We have a few operations where we are doing a large number of large string concatenations, and have recently encountered an out of memory exception. Unfortunately, debugging the code is not an option, as this is occurring at a customer site. So, before looking into a overhaul of our code, I would like to ask: what is the RAM consumption characteristics of StringBuilder for large strings? Especially as they compare to the standard string type. The size of the strings are well over 10 MB, and we seem to run into the issues around 20 MB. NOTE : This is not about speed but RAM. Here is a nice

i'd like to understand the difference in RAM-usage of this methods when reading a large file in python. Version 1, found here on stackoverflow: def read_in_chunks(file_object, chunk_size=1024): while True: data = file_object.read(chunk_size) if not data: break yield data f = open(file, 'rb') for piece in read_in_chunks(f): process_data(piece) f.close() Version 2, i used this before i found the code above: f = open(file, 'rb') while True: piece = f.read(1024) process_data(piece) f.close() The file is read partially in both versions. And the current piece could be processed. In the second

I'm trying to execute a function from RAM on a Cortex-M3 processor (STM32). The function erases the and rewrites the internal flash, so i definitely needs to be in RAM but how do I do that? What I have tried is this: Copy the function to a byte array in RAM using memcpy (checking that it gets aligned correctly), setting a function pointer to point to the byte array an then calling the the function(pointer). This works fine for maybe 10 instructions (I can follow the execution with the debugger) but then I get a buss error and the processor resets. The buss error occurs on the second pass